So any chance for a little part in DOFP now that we know Havok is in it..?

Well on the Trask viral site it mentions sonar being a mutant ability. That is one of Banshee's abilities, so personally, I think it hints at him. Caleb said he wouldn't be returning, but didn't the dude playing Havok say the same thing back then? I really think he'll return in DOFP.